

A049723


Array T read by diagonals; T(i,j)=number of lattice points (x,y) in closed right halfplane and circle with radius (0,0)to(i,j).


10



1, 4, 4, 9, 6, 9, 18, 13, 13, 18, 29, 22, 15, 22, 29, 46, 33, 26, 26, 33, 46, 63, 50, 39, 35, 39, 50, 63, 82, 67, 54, 46, 46, 54, 67, 82, 107, 88, 71, 60, 56, 60, 71, 88, 107, 136, 115, 96, 79, 75, 75, 79, 96, 115, 136, 169, 140, 119, 100
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

0,2


COMMENTS

Specifically, i<=x<=i, 0<=y<=j, x^2 + y^2 <= i^2 + j^2.


LINKS



EXAMPLE

Diagonals (each starting on row 1): {1}; {4,4}; {9,6,9}; ...


CROSSREFS



KEYWORD



AUTHOR



STATUS

approved



